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Multiple reference frames motion compensation is one of the new features adopted in H.264/AVC to improve the coding efficiency of inter frames. However, the computational complexity of multi-reference frames motion estimation (MRME) is increased in proportion to the number of searched reference frames. This paper presents a novel scheme to reduce the(More)
Different methods exist for deriving a 3D linear transformation, including vector algebra, geometric algebra, and matrix algebra (Artin, 1991; Hestenes, 1986, Foley et al., 2002). In this paper, we introduce Ron Goldman's unified derivation method in vector algebra (Goldman, 2003) combined with our developments in geometric algebra (Hestenes, 1986; Dorst(More)
This paper addresses the problem of reconstructing implicit function from point clouds with noise and outliers acquired with 3D scanners. We introduce a filtering operator based on mean shift scheme, which shift each point to local maximum of kernel density function, resulting in suppression of noise with different amplitudes and removal of outliers. The "(More)
In this paper, we present a novel rendering algorithm for implicit surfaces by using a particle system. First, an alternative initial technique based on bundles of parallel lines is used to find initial points that are evenly distributed on the surface. Because of its characteristics, the usual split-and-death criterion of particle system is not needed.(More)
Linear shading interpolation is not physically correct in perspective projection. We present a perspective correct interpolation method. Our method achieves the perspective correct interpolation in the standard graphics pipeline in contrast to other's that is calculated in a nonstandard graphics pipeline or by using similar triangles technology. We also(More)